[INFO] crate crc32c 0.4.0 is already in cache
[INFO] extracting crate crc32c 0.4.0 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/crc32c/0.4.0
[INFO] extracting crate crc32c 0.4.0 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/crc32c/0.4.0
[INFO] validating manifest of crc32c-0.4.0 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of crc32c-0.4.0 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing crc32c-0.4.0
[INFO] finished frobbing crc32c-0.4.0
[INFO] frobbed toml for crc32c-0.4.0 written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/crc32c/0.4.0/Cargo.toml
[INFO] started frobbing crc32c-0.4.0
[INFO] finished frobbing crc32c-0.4.0
[INFO] frobbed toml for crc32c-0.4.0 written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/crc32c/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking crc32c-0.4.0 against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/crc32c/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 57a2fc7945f52a6db7943378004464862717fd5c2df70adb0e013e0e401cb051
[INFO] running `"docker" "start" "-a" "57a2fc7945f52a6db7943378004464862717fd5c2df70adb0e013e0e401cb051"`
[INFO] [stderr]    Compiling crc32c v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `mem` is imported redundantly
[INFO] [stderr]  --> build.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{mem, ops};
[INFO] [stderr]   |           --- the item `mem` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 8 |     use std::mem;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `"docker" "inspect" "57a2fc7945f52a6db7943378004464862717fd5c2df70adb0e013e0e401cb051"`
[INFO] running `"docker" "rm" "-f" "57a2fc7945f52a6db7943378004464862717fd5c2df70adb0e013e0e401cb051"`
[INFO] [stdout] 57a2fc7945f52a6db7943378004464862717fd5c2df70adb0e013e0e401cb051